3694664
Self Tensioning Belt
Cummins®

Introduction

The Cummins 3694664 Self Tensioning Belt is a critical component for commercial trucks, designed to maintain optimal tension in the accessory drive system. This ensures efficient operation of the truck’s engine and its accessories.

Basic Concepts of Self Tensioning Belts

Self tensioning belts automatically adjust tension as they wear, reducing maintenance needs and enhancing durability. They use a tensioner mechanism to maintain optimal tension, ensuring efficient power transmission to engine accessories like the alternator, water pump, and air conditioning compressor ¹.

Purpose of the 3694664 Self Tensioning Belt

This Cummins part ensures consistent power transfer from the engine to various accessories, minimizing slippage and wear. It contributes to the truck’s overall performance and reliability by maintaining correct tension ².

Key Features

The 3694664 features a robust design with a ribbed profile for enhanced grip, constructed from durable materials resistant to wear and environmental factors. Its self-tensioning mechanism distinguishes it from traditional belts, offering ease of installation and reduced maintenance needs.

Benefits of Using a Self Tensioning Belt

Using this part offers improved efficiency in the accessory drive system, reduced maintenance requirements, and enhanced durability, leading to longer service intervals and reduced replacement costs.

Installation Process

Installing the 3694664 requires loosening the tensioner, placing the belt around the pulleys, and releasing the tensioner to apply tension. Correct tools and safety precautions are essential to prevent injury and component damage.

Troubleshooting Common Issues

Common issues include slippage and noise, often due to improper installation, wear, or damage. Checking for wear, ensuring correct installation, and inspecting components can resolve most issues.

Maintenance Tips

Regular inspections for wear, cracking, or glazing are recommended. Replacement guidelines suggest inspecting the belt during routine maintenance checks and replacing it if significant wear is observed.

Cummins Overview

Cummins Inc. is a global leader in engines, filtration, and power generation products, known for innovation and quality in the commercial truck industry.

Compatibility with Cummins Engines

The Self Tensioning Belt 3694664 is compatible with various Cummins engines, including the X12 CM2350 and X119B, ensuring optimal performance and reliability. It is also compatible with other engines within the same series, ensuring broad application without modifications.

Ensuring Proper Fitment

Following manufacturer’s guidelines for installation, including checking the belt’s length, width, and tooth profile, is essential for proper fitment and engine efficiency.

Role in Engine Systems

The 3694664 is integral to the efficient operation of engine components, ensuring smooth and reliable performance.

Interaction with the Mounting System

The mounting system securely holds the Self Tensioning Belt, allowing it to transfer power effectively. The belt’s self-tensioning feature ensures consistent tension, reducing slippage and wear.

Integration with the Refrigerant Compressor

The Self Tensioning Belt drives the refrigerant compressor, ensuring it operates at the correct speed and efficiency. This contributes to the vehicle’s climate control system’s comfort and functionality.

Conclusion

The Cummins 3694664 Self Tensioning Belt is a vital component for commercial trucks, offering efficient power transmission, reduced maintenance needs, and enhanced durability. Its compatibility with various Cummins engines ensures optimal performance and reliability.